Cylinder-head.



E. T. ROSS.

CYLINDER HEAD. APPLICATION man DEC.29\1916.

Patented. Sept. 25, 1917.

2 SHEETSSHEET I.

datum E. T. ROSS.

CYLINDER HEAD. APPLlCATlON FILED DEC. 29. 1916.

2SHEETSSHEET 2.

Patented Sept. 25, 1917.

ear than onion.

EIDWARD T. ROSS, DETRQIT, 'MICHEGAN.

, cxLInnn'n-nnen.

Specification of Letters Patent. Pateymfiggqfl 3. m 25 1131?,

Application filed December 29, 1916. Serial No. 139,652.

To all whom it may concern;

Be it known that T, EDWARD T. Ross, a citi ten of the United States ofAmerica, residlng at Detroit, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements in Cylinder-Heads, of which the following is a specificatlon, reference being hadtherein to the accompanying drawings.

The invention relates tointernal combustion engines and has particularreference to the construction of cylinder head. In the present state ofthe art, it is usual to provide the cylinder heads with integralwater-jackets which are formed by coring. With my improved constructionthe head is formed of a plaincasting without any core work, and thewater-jacket is separately formed of pressed sheet-metal. Theconstruction is also such as to permit of easily assembling the partsand maintaining a water-tight joint when assembled.

In the drawings:

Figural is a plan view of the cylinder head with the water-jacketremoved;

Fig. 2 is a plan view of the water-jacket;

Fig. 3 is a longitudinal section on the line w-ze Fig. 1;

Fig. 4 is a cross section on line g g Fig. 1;

Fig. 5 is a side elevation.

A is the cast cylinder head, which as shown is designed for amulti-cylinder engine. This head not only covers the cylinder proper butis extended marginally to-cover the water-jacket surrounding thecylinder walls, as shown at B. Apertures are arranged at suitable pointsfor opening nto the water-jacket of the' cylinder, and apertures D areformed for engagement with the studs or securing bolts E which fastenthe head to thec ylinder. These latter apertures are formed 1nupwardly-extending lugs F, the upper ends of which are in a commonhorizontal plane, and apertured lugs G are also extended upward from thehead to the seine plane, these being used for the sparkp ugs. I

H is the water-jacket, which is formed of pressed sheet-metal havin thedownturned peripheral flanges T and t e top portion H which is seatedupon the apertured lugs F and G. There is also preferably formedcentrally and extending longitudinally of the jacket a tapering portionK, which at its large end is apertured for connection with the hoseleading'to the radiator. The flange I is seated in a marginal groove Lformed in the memberA, and suitable packing material is placed in thisgroove to form a water seal. The member H is also apertured inregistration with the apertures in the lugs F and G, so that the boltsor studs-E which secure. the head to the cylinder will also fasten downthe water-j acket. In addition to this securing means flanged bushings Mhave a threaded engagement with the apertured lugs G, so .as to clampdown the water-jacket, said bushings being internally threaded -for theengagement of the spark-plugs N.

The construction described decreases the cost of manufacture bydispensing with core work in casting and at the same time thesubstitution of the sheet-metal jacket for the integral cast-metalconstruction reduces the weight.

What I claim as my invention is:

. 1. A cylinder head, comprising a cast metal member for engaging thecylinder, a pressed sheet-metal member seated upon said cast member andforming a water-jacket, and a common clamping means for securing saidcast and pressed sheet-metal members to the cylinders.

2A cylinder head, comprising a castmetal member for directly engagingthe cylinder, marginally extended to cover the water-jacket side wallsand apertured in registration with the water-jacket, a pressedsheet-metal member for covering said cast member, having downturnedmarginal flanges seated with a water sealing joint upon the cast member,and securing bolts passing through alined apertures in both of saidmembers and holding the same to the cylinder.

3. A cylinder head, comprising a castmetal member for directly engagingthe cylinder and extended marginally to cover the water-jacket, beingapertured in registration with said jacket and being provided with amarginal groove on its upper face, a water-jacket formed of a pressedsheetmetal member having a depending flange seated in said marginalgroove, and common clam' ing means for securing said sheet-meta memberand cast-metal member to the cylinder.

4. A cylinder head, comprising a cast-metal member for directly engagingthe cylinder, marginally extended to cover the waterjacket and providedwith one or more up- Wardly-extending apertured lugs, '21 bushingwardly-extending apertured lugs, a pressed engaging one of saidapertured lugs and a sheet-metal Water-jacket having a dependregisteringaperture in the Water-jacket, ing flange seated upon the marginalportion securing said members to each other and 40 of said cast-metalmember and also seated forming a socket for the spark-plug, and a onsaid upwardly-extending lugs, being clamping bolt engaging anotherapertured apertured in registration therewith, and lug and registeringaperture in the waterclamping bolts passing through the registerjacketfor securing both of said members ing apertures for securlng both thepressed to the cylinder. sheet-metal member and cast-metal member 7. Acylinder head, comprising a castto the cylinder. metal member fordirectly engaging the 5. A cylinder head, comprising a castcylinder,said member having upwardly-exmetal member for directly engaging thetending apertured lugs, a pressed sheetcylinder, being marginallyextended to cover metal Water-jacket covering said cast-metal v theWater-jacket and having a marginal member and seated upon said lugs,said groove in the upper face thereof, said memmember having dependingmarginal flanges, ber being also provided With upwardly-exa bushingengaging one of said apertured tending apertured lugs, a pressedsheetlugs and a registering aperture in the Watermetal Water-jacketcovering said cast-metal jacket, securing said members to each othermember having a'marginal depending flange and forming a socket for thespark-plug, seated in said marginal groove and also and a clamping boltengaging another aperbearing upon said upwardly-extending apertured lugand registering aperture in the tured lugs, and means engaging saidaper- Water-jacket for securing both of the memtured lugs andregistering apertures in the bers to the cylinder. pressed sheet-metalmember for securing the 8. A cylinder head, comprlsing a castlatter tothe former. -metal member for directly engaging the 6. A cylinder head,comprising a castcylinder, said member having upwardly-exmetal memberfor directly engaging the tending apertured lugs, a pressedsheetcylinder, having a marginal portionextendmetal Water-jacketcovering said cast-metal ing to cover the Water-jacket and having amember and seated upon said upwardly-exgroove in its upper face, saidmember betendlng lugs, and means engaging said apering also providedWith upwardly-extending tured lugs and registering apertures in theapertured lugs, a pressed-sheet-metal watersheet-metal member forsecuring the latter jacket covering said cast-metal member havto theformer. ing a depending marginal flange seated in In testimony whereof Iafiix my signature. said groove and also seated upon said up- EDWARD T.ROSS.

